SL/R231: Lithium auxiliary batter
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Joined: Dec 2020
Posts: 47
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
Lithium auxiliary batter
Anybody tried a lithium auxiliary battery such as below.
The sellers tell me it would be perfect as very low drain and charges with standard 12v system. But then they probably would.
PS-12 PAC.....BRAND NEW POWERLITE LITHIUM ION HIGH PERFORMANCE MOTORSPORT BATTERY
+ POWERLITE BATTERY CHARGER & ALUMINIUM MOUNTING BRACKET
TO SUIT ROAD,RACE,RALLY OR KIT CAR APPLICATION High performance, quality Lithium Ion LiFePo4 Battery..To suit small-medium sized petrol engines with an original
battery capacity up to 420CCA.Contact us with the vehicle/engine info if unsure of compatibility
as we have all the powerlite battery options in stock and available
CHARGES FROM VEHICLE ALTERNATOR SAME AS A STANDARD CAR BATTERY
Unique built in voltage check panel.
Voltage - 12.8v Capacity - 15Ah
Cold Cranking Amps - 420cca
Size (mm) (W x D x H) - 150mm x 85mm x 130mm
(SEE DATA BELOW FOR OTHER BATTERY SIZES AVAILABLE IN THE RANGE)
POWERLITE PERFORMANCE LITHIUM ION BATTERIES ARE CONSTRUCTED USING HIGH RATE LiFeP04 CELLS.THIS TECHNOLOGY HAS A HIGH INSTANT DISCHARGE CURRENT AND CAN BE QUICKLY CHARGED.ALSO,IF KEPT IN THE CORRECT CONDITIONS WILL SUFFER MINIMAL POWER DISCHARGE IF LEFT UNUSED.
LiFeP04 TECHNOLOGY IS THE SAFEST TYPE OF LITHIUM BATTERY.
ALL POWERLITE LITHIUM ION BATTERIES ARE EQUIPPED WITH ELECTRONIC SYSTEMS TO PROTECT AGAINST OVERCHARGING/OVER DISCHARGING OR SHORT CIRCUIT,ALSO EACH BATTERY HAS A VOLTAGE INDICATOR TO TEST THE BATTERY CONDITION (THIS MUST BE SWITCHED OFF AFTER CHECKING)
THE BATTERY TERMINALS ARE MADE OF FINE GRADE COPPER TO ENSURE A PERFECT CONNECTION.
WHY CHOOSE A POWERLITE HIGH PERFORMANCE LITHIUM ION BATTERY ?
The sellers tell me it would be perfect as very low drain and charges with standard 12v system. But then they probably would.
PS-12 PAC.....BRAND NEW POWERLITE LITHIUM ION HIGH PERFORMANCE MOTORSPORT BATTERY
+ POWERLITE BATTERY CHARGER & ALUMINIUM MOUNTING BRACKET
TO SUIT ROAD,RACE,RALLY OR KIT CAR APPLICATION High performance, quality Lithium Ion LiFePo4 Battery..To suit small-medium sized petrol engines with an original
battery capacity up to 420CCA.Contact us with the vehicle/engine info if unsure of compatibility
as we have all the powerlite battery options in stock and available
CHARGES FROM VEHICLE ALTERNATOR SAME AS A STANDARD CAR BATTERY
Unique built in voltage check panel.
Voltage - 12.8v Capacity - 15Ah
Cold Cranking Amps - 420cca
Size (mm) (W x D x H) - 150mm x 85mm x 130mm
(SEE DATA BELOW FOR OTHER BATTERY SIZES AVAILABLE IN THE RANGE)
POWERLITE PERFORMANCE LITHIUM ION BATTERIES ARE CONSTRUCTED USING HIGH RATE LiFeP04 CELLS.THIS TECHNOLOGY HAS A HIGH INSTANT DISCHARGE CURRENT AND CAN BE QUICKLY CHARGED.ALSO,IF KEPT IN THE CORRECT CONDITIONS WILL SUFFER MINIMAL POWER DISCHARGE IF LEFT UNUSED.
LiFeP04 TECHNOLOGY IS THE SAFEST TYPE OF LITHIUM BATTERY.
ALL POWERLITE LITHIUM ION BATTERIES ARE EQUIPPED WITH ELECTRONIC SYSTEMS TO PROTECT AGAINST OVERCHARGING/OVER DISCHARGING OR SHORT CIRCUIT,ALSO EACH BATTERY HAS A VOLTAGE INDICATOR TO TEST THE BATTERY CONDITION (THIS MUST BE SWITCHED OFF AFTER CHECKING)
THE BATTERY TERMINALS ARE MADE OF FINE GRADE COPPER TO ENSURE A PERFECT CONNECTION.
WHY CHOOSE A POWERLITE HIGH PERFORMANCE LITHIUM ION BATTERY ?
- EXCEPTIONAL CRANKING POWER FOR THE BATTERY SIZE
- COMPLETELY MAINTENANCE FREE,SEALED CONSTRUCTION
- LIGHTWEIGHT AND COMPACT WITH EXCEPTIONAL HIGH DISCHARGE CAPABILITIES
- CAN BE INSTALLED UPRIGHT,SIDE ON OR EVEN UPSIDE DOWN
- COMPLETELY LIQUID FREE SO NO POSSIBILITY OF LEAKAGE EVEN IF THE CASING BECOMES DAMAGED
- PS-12 PAC.....BRAND NEW POWERLITE LITHIUM ION HIGH PERFORMANCE MOTORSPORT BATTERY
+ POWERLITE BATTERY CHARGER & ALUMINIUM MOUNTING BRACKET
TO SUIT ROAD,RACE,RALLY OR KIT CAR APPLICATION High performance, quality Lithium Ion LiFePo4 Battery..To suit small-medium sized petrol engines with an original
battery capacity up to 420CCA.Contact us with the vehicle/engine info if unsure of compatibility
as we have all the powerlite battery options in stock and available
CHARGES FROM VEHICLE ALTERNATOR SAME AS A STANDARD CAR BATTERY
Unique built in voltage check panel.
Voltage - 12.8v Capacity - 15Ah
Cold Cranking Amps - 420cca
Size (mm) (W x D x H) - 150mm x 85mm x 130mm
(SEE DATA BELOW FOR OTHER BATTERY SIZES AVAILABLE IN THE RANGE)
POWERLITE PERFORMANCE LITHIUM ION BATTERIES ARE CONSTRUCTED USING HIGH RATE LiFeP04 CELLS.THIS TECHNOLOGY HAS A HIGH INSTANT DISCHARGE CURRENT AND CAN BE QUICKLY CHARGED.ALSO,IF KEPT IN THE CORRECT CONDITIONS WILL SUFFER MINIMAL POWER DISCHARGE IF LEFT UNUSED.
LiFeP04 TECHNOLOGY IS THE SAFEST TYPE OF LITHIUM BATTERY.
ALL POWERLITE LITHIUM ION BATTERIES ARE EQUIPPED WITH ELECTRONIC SYSTEMS TO PROTECT AGAINST OVERCHARGING/OVER DISCHARGING OR SHORT CIRCUIT,ALSO EACH BATTERY HAS A VOLTAGE INDICATOR TO TEST THE BATTERY CONDITION (THIS MUST BE SWITCHED OFF AFTER CHECKING)
THE BATTERY TERMINALS ARE MADE OF FINE GRADE COPPER TO ENSURE A PERFECT CONNECTION.
WHY CHOOSE A POWERLITE HIGH PERFORMANCE LITHIUM ION BATTERY ? - EXCEPTIONAL CRANKING POWER FOR THE BATTERY SIZE
- COMPLETELY MAINTENANCE FREE,SEALED CONSTRUCTION
- LIGHTWEIGHT AND COMPACT WITH EXCEPTIONAL HIGH DISCHARGE CAPABILITIES
- CAN BE INSTALLED UPRIGHT,SIDE ON OR EVEN UPSIDE DOWN
- COMPLETELY LIQUID FREE SO NO POSSIBILITY OF LEAKAGE EVEN IF THE CASING BECOMES DAMAGED
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From: Land of 10,000 lakes
AMG GTC Roadster, E63s Ed.1, M8 Comp. Coupe
I can't see a value proposition for a battery upgrade. AMG's use Lithium Ion batteries for weight reduction but those costs in the 4 digits. Never had an issue with the cranking power of the stock OEM batteries.
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
Had a LiFePO4 aftermarket battery in my golf trolley for 10 years and it still has capacity for more than 36 holes . Weighs a third as much and I don’t think I’ll ever have to change it.
so value would be that these batteries never have to be changed as opposed to the less acid which seem to need changing every few years. Also less likely to run flat with a prolonged period of non-use and if it does, it doesn’t result in the death of the battery.
so value would be that these batteries never have to be changed as opposed to the less acid which seem to need changing every few years. Also less likely to run flat with a prolonged period of non-use and if it does, it doesn’t result in the death of the battery.
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2007 SL65 AMG
A cheaper option. Not certain that you need that high a CCA for the aux battery.
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From: New Orleans Area
2015 E400 Sedan
WHY?
Nto gonna go faster... or get better MPG.... OR save the environment..
Cost more so technically you wallet loses weight.
Probably will last same time period since charging system not designed for it.
Stick with my cheap little $50 motorcycle battery back there.
Nto gonna go faster... or get better MPG.... OR save the environment..
Cost more so technically you wallet loses weight.
Probably will last same time period since charging system not designed for it.
Stick with my cheap little $50 motorcycle battery back there.
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From: Phoenix
2015 SL400, BMW Z3, Datsun 280Z, a couple of jeep Grand Cherokee's - And a Commander Airplane
Have different charging requirements
Cost way more
Are WAY more of a fire concern than sealed lead acid.
Aux batteries have been lasting 10+ years.
Cost way more
Are WAY more of a fire concern than sealed lead acid.
Aux batteries have been lasting 10+ years.
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
You would save 3.4kg in weight and so you would go faster - expect your 0-100 time to reduce by 0.02 seconds.
expect your fuel consumption to improve by .1%
So it would save the environment - but not by very much!
expect your fuel consumption to improve by .1%
So it would save the environment - but not by very much!
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
Charges just like a lead acid battery as it has electronics to make it do this.
It is LiFePO4 and not lithium polymer so not a fire risk
It does cost way more though not that much more than a “Genuine” Mercedes battery.
It is LiFePO4 and not lithium polymer so not a fire risk
It does cost way more though not that much more than a “Genuine” Mercedes battery.
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2024 GLB35 AMG, 2020 S560 Coupe
That's questionable. The existing electronics are not expecting a Li battery which require a different charging profile. Overcharging a Li battery and, perhaps charging too quickly when near full charge can lead to fire and/or explosion. The main battery in my GTS was Li and I had a separate CTEK trickle charger for it.
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Shanks’s Pony
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'17 SL450, '25 Lyriq, '25 Sonata Hybrid, '96 Corvette GS coupe
Not to throw a turd in the punch bowl or anything, but there is a stern warning on top of the original AGM battery that says "Replace with same technology only!" I didn't add that exclamation point, M-B did. Probably because of this:
That's questionable. The existing electronics are not expecting a Li battery which require a different charging profile. Overcharging a Li battery and, perhaps charging too quickly when near full charge can lead to fire and/or explosion. The main battery in my GTS was Li and I had a separate CTEK trickle charger for it.
Last edited by Dr. Manhattan; Jan 2, 2021 at 12:08 PM.
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
Batteries of this type have electronics inside so that they charge and discharge like lead acid batteries. Would probably make more sense to replace the main battery with an Antigravity or similar where you could save around 20kg which is 1% of the weight of the car. I believe that Mercedes produce a battery for the black series AMG GT which is this type of technology though haven’t found the exact details.
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From: Nothern Georgia, U.S.A.
'17 SL450, '25 Lyriq, '25 Sonata Hybrid, '96 Corvette GS coupe
I was just thinking the same thing. The OP should order one up, install it, and then let us know how it goes...since this is a question that only he is asking. Why bother with it at all? This is a high-risk/low-reward situation. I could possibly understand if we were talking about the battery in a 911, but the auxiliary battery in an SL is only a 12Ah, smallish motorcycle-type battery that weighs almost nothing already...
I did see an interesting YouTube clip once from a guy with an S2000 (IIRC) who replaced his battery with a gang of large capacitors that weighed like 2lbs. He started the car a few of times in a row off of those caps, which was rather impressive. He did also end up connecting a motorcycle battery in parallel with the cap setup to help with dips in the system voltage when running his accessories, so some of the weight savings was lost...but still, it was an interesting experiment for the hell of it.
Now, if the SL's auxiliary battery was only used for the Eco Start/Stop function and nothing else, then it would indeed be a prime candidate for replacing with a capacitor setup, as it's only taking the load for a brief moment while the starter motor is restarting the engine. Unfortunately, the aux battery also supplies the Keyless Entry and shifter modules, which does seem to dictate the use of a small storage battery of some kind...possibly a nice AGM battery of, oh, approximately 12Ah or so. Hmmm...
I did see an interesting YouTube clip once from a guy with an S2000 (IIRC) who replaced his battery with a gang of large capacitors that weighed like 2lbs. He started the car a few of times in a row off of those caps, which was rather impressive. He did also end up connecting a motorcycle battery in parallel with the cap setup to help with dips in the system voltage when running his accessories, so some of the weight savings was lost...but still, it was an interesting experiment for the hell of it.
Now, if the SL's auxiliary battery was only used for the Eco Start/Stop function and nothing else, then it would indeed be a prime candidate for replacing with a capacitor setup, as it's only taking the load for a brief moment while the starter motor is restarting the engine. Unfortunately, the aux battery also supplies the Keyless Entry and shifter modules, which does seem to dictate the use of a small storage battery of some kind...possibly a nice AGM battery of, oh, approximately 12Ah or so. Hmmm...
Last edited by Dr. Manhattan; Jan 2, 2021 at 04:17 PM.
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From: Nothern Georgia, U.S.A.
'17 SL450, '25 Lyriq, '25 Sonata Hybrid, '96 Corvette GS coupe
A Douglas Adams devotee! Cool. We didn't mean anything nasty, for sure. What I've noticed on this forum is that there are fewer super-technical/modification-type questions on the SL than there are on almost any other enthusiast car. Folks tend to just buy and enjoy these cars rather than re-engineering the car's systems as is common with many other performance vehicles. Your battery question is not completely uninteresting to everyone, just maybe to most. Generally, I've found the atmosphere here to actually be friendlier and more pleasant than most other car forums. Give us another chance, please. And, in case you ever do really need to get your neck jumped on, just drop in to a Viper forum some time and say "hi". You won't know what hit you until after you return to consciousness...
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Thread Starter
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
Mercedes 12v lithium battery
This is the 12v lithium battery using similar technology which Mercedes put in the SLS black series which runs with the standard alternator.
See YouTube Chris Harris on SLS Black Series.
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Thread Starter
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SL63 SL500 Toyota Landcruiser, S1000RR, Jaguar I pace
It’s not a video - just a screen capture. You can find the video on YouTube.
point is that it just uses the standard charging system found in any other Mercedes rather than a specific lithium charger.
If you use an external charger, it does need a different one from the normal chargers as they are quite different from the car charging system.
point is that it just uses the standard charging system found in any other Mercedes rather than a specific lithium charger.
If you use an external charger, it does need a different one from the normal chargers as they are quite different from the car charging system.
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From: Nothern Georgia, U.S.A.
'17 SL450, '25 Lyriq, '25 Sonata Hybrid, '96 Corvette GS coupe
Nothing says that the SLS Black's lithium battery charging system charges with the same voltage curve as any other M-B. That car's alternator could have a special voltage regulator for the lithium load. Or, the battery could have it's own voltage regulator, but wouldn't that also require some accommodation on the part of the alternator? I know Porsche sells a lithium conversion battery for the 911 that costs around $1700, but that battery does have its own control electronics built in.
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2015 SL400, BMW Z3, Datsun 280Z, a couple of jeep Grand Cherokee's - And a Commander Airplane
Nothing says that the SLS Black's lithium battery charging system charges with the same voltage curve as any other M-B. That car's alternator could have a special voltage regulator for the lithium load. Or, the battery could have it's own voltage regulator, but wouldn't that also require some accommodation on the part of the alternator? I know Porsche sells a lithium conversion battery for the 911 that costs around $1700, but that battery does have its own control electronics built in.
